About this article
Published Online: Dec 02, 2020
Page range: 395 - 404
Received: Oct 27, 2020
DOI: https://doi.org/10.2478/ausm-2020-0028
Keywords
© 2020 Csaba Szántó et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Szántó, Csaba
Babeş-Bolyai University, Faculty of Mathematics and Computer ScienceCluj-Napoca, Romania
Szöllősi, István
Babeş-Bolyai University, Faculty of Mathematics and Computer ScienceCluj-Napoca, Romania